From publisher blurb:
Create Earthquakes and Forest, Mountain, and Underground Monster Lairs in Minutes!
Enjoy quick, easy templates to spice up encounters, travel, and especially boss fights with earth elementals, dragons, hags, hill or stone giants, as well as campaigns featuring forest creatures or monsters that live in hills or mountains, or deep underground.
In this extreme template pack, you get environment rules as well as new monsters and treasure ideas for:
Chaos of Creation (magical terrain)
Cave Complex (nonmagical terrain)
Chasm or Cliff (nonmagical terrain)
Earthquake (nonmagical terrain)
Forest (nonmagical terrain)
Hills or Mountains (nonmagical terrain)
Mine Shaft (nonmagical terrain)
Mud or Clay (nonmagical terrain)
Quarry (nonmagical terrain)